1/* $Id: kgdb.h,v 1.1.1.1 2008/10/15 03:29:17 james26_jang Exp $
2 * kgdb.h: Defines and declarations for serial line source level
3 *         remote debugging of the Linux kernel using gdb.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7#ifndef _SPARC_KGDB_H
8#define _SPARC_KGDB_H
9
10#ifndef __ASSEMBLY__
11/* To init the kgdb engine. */
12extern void set_debug_traps(void);
13
14/* To enter the debugger explicitly. */
15extern void breakpoint(void);
16
17/* For convenience we define the format of a kgdb trap breakpoint
18 * frame here also.
19 */
20struct kgdb_frame {
21	unsigned long globals[8];
22	unsigned long outs[8];
23	unsigned long locals[8];
24	unsigned long ins[8];
25	unsigned long fpregs[32];
26	unsigned long y;
27	unsigned long psr;
28	unsigned long wim;
29	unsigned long tbr;
30	unsigned long pc;
31	unsigned long npc;
32	unsigned long fpsr;
33	unsigned long cpsr;
34};
35#endif /* !(__ASSEMBLY__) */
36
37/* Macros for assembly usage of the kgdb breakpoint frame. */
38#define KGDB_G0     0x000
39#define KGDB_G1     0x004
40#define KGDB_G2     0x008
41#define KGDB_G4     0x010
42#define KGDB_G6     0x018
43#define KGDB_I0     0x020
44#define KGDB_I2     0x028
45#define KGDB_I4     0x030
46#define KGDB_I6     0x038
47#define KGDB_Y      0x100
48#define KGDB_PSR    0x104
49#define KGDB_WIM    0x108
50#define KGDB_TBR    0x10c
51#define KGDB_PC     0x110
52#define KGDB_NPC    0x114
53
54#define SAVE_KGDB_GLOBALS(reg) \
55        std     %g0, [%reg + REGWIN_SZ + KGDB_G0]; \
56        std     %g2, [%reg + REGWIN_SZ + KGDB_G2]; \
57        std     %g4, [%reg + REGWIN_SZ + KGDB_G4]; \
58        std     %g6, [%reg + REGWIN_SZ + KGDB_G6];
59
60#define SAVE_KGDB_INS(reg) \
61        std     %i0, [%reg + REGWIN_SZ + KGDB_I0]; \
62        std     %i2, [%reg + REGWIN_SZ + KGDB_I2]; \
63        std     %i4, [%reg + REGWIN_SZ + KGDB_I4]; \
64        std     %i6, [%reg + REGWIN_SZ + KGDB_I6];
65
66#define SAVE_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
67        st      %reg_y, [%reg + REGWIN_SZ + KGDB_Y]; \
68        st      %reg_psr, [%reg + REGWIN_SZ + KGDB_PSR]; \
69        st      %reg_wim, [%reg + REGWIN_SZ + KGDB_WIM]; \
70        st      %reg_tbr, [%reg + REGWIN_SZ + KGDB_TBR]; \
71        st      %reg_pc, [%reg + REGWIN_SZ + KGDB_PC]; \
72        st      %reg_npc, [%reg + REGWIN_SZ + KGDB_NPC];
73
74#define LOAD_KGDB_GLOBALS(reg) \
75        ld      [%reg + REGWIN_SZ + KGDB_G1], %g1; \
76        ldd     [%reg + REGWIN_SZ + KGDB_G2], %g2; \
77        ldd     [%reg + REGWIN_SZ + KGDB_G4], %g4; \
78        ldd     [%reg + REGWIN_SZ + KGDB_G6], %g6;
79
80#define LOAD_KGDB_INS(reg) \
81        ldd     [%reg + REGWIN_SZ + KGDB_I0], %i0; \
82        ldd     [%reg + REGWIN_SZ + KGDB_I2], %i2; \
83        ldd     [%reg + REGWIN_SZ + KGDB_I4], %i4; \
84        ldd     [%reg + REGWIN_SZ + KGDB_I6], %i6;
85
86#define LOAD_KGDB_SREGS(reg, reg_y, reg_psr, reg_wim, reg_tbr, reg_pc, reg_npc) \
87	ld	[%reg + REGWIN_SZ + KGDB_Y], %reg_y; \
88	ld	[%reg + REGWIN_SZ + KGDB_PSR], %reg_psr; \
89	ld	[%reg + REGWIN_SZ + KGDB_WIM], %reg_wim; \
90	ld	[%reg + REGWIN_SZ + KGDB_TBR], %reg_tbr; \
91	ld	[%reg + REGWIN_SZ + KGDB_PC], %reg_pc; \
92	ld	[%reg + REGWIN_SZ + KGDB_NPC], %reg_npc;
93
94#endif /* !(_SPARC_KGDB_H) */
95